Merge pull request #9737 from candrews:autocommit

* pr/9737:
  Polish "When pool autocommit is disabled, inform Hibernate"
  When pool autocommit is disabled, inform Hibernate

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.autoconfigure.orm.jpa;
 
+import java.util.Collection;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -30,6 +31,9 @@ import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate;
 import org.springframework.boot.autoconfigure.transaction.TransactionManagerCustomizers;
 import org.springframework.boot.jdbc.SchemaManagementProvider;
+import org.springframework.boot.jdbc.metadata.CompositeDataSourcePoolMetadataProvider;
+import org.springframework.boot.jdbc.metadata.DataSourcePoolMetadata;
+import org.springframework.boot.jdbc.metadata.DataSourcePoolMetadataProvider;
 import org.springframework.boot.orm.jpa.hibernate.SpringJtaPlatform;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.jndi.JndiLocatorDelegate;
@@ -56,6 +60,8 @@ class HibernateJpaConfiguration extends JpaBaseConfiguration {
 
 	private static final String JTA_PLATFORM = "hibernate.transaction.jta.platform";
 
+	private static final String PROVIDER_DISABLES_AUTOCOMMIT = "hibernate.connection.provider_disables_autocommit";
+
 	/**
 	 * {@code NoJtaPlatform} implementations for various Hibernate versions.
 	 */
@@ -73,14 +79,19 @@ class HibernateJpaConfiguration extends JpaBaseConfiguration {
 
 	private final HibernateDefaultDdlAutoProvider defaultDdlAutoProvider;
 
+	private DataSourcePoolMetadataProvider poolMetadataProvider;
+
 	HibernateJpaConfiguration(DataSource dataSource, JpaProperties jpaProperties,
 			ObjectProvider<JtaTransactionManager> jtaTransactionManager,
 			ObjectProvider<TransactionManagerCustomizers> transactionManagerCustomizers,
+			ObjectProvider<Collection<DataSourcePoolMetadataProvider>> metadataProviders,
 			ObjectProvider<List<SchemaManagementProvider>> providers) {
 		super(dataSource, jpaProperties, jtaTransactionManager,
 				transactionManagerCustomizers);
 		this.defaultDdlAutoProvider = new HibernateDefaultDdlAutoProvider(
 				providers.getIfAvailable(Collections::emptyList));
+		this.poolMetadataProvider = new CompositeDataSourcePoolMetadataProvider(
+				metadataProviders.getIfAvailable());
 	}
 
 	@Override
@@ -103,6 +114,9 @@ class HibernateJpaConfiguration extends JpaBaseConfiguration {
 		if (!vendorProperties.containsKey(JTA_PLATFORM)) {
 			configureJtaPlatform(vendorProperties);
 		}
+		if (!vendorProperties.containsKey(PROVIDER_DISABLES_AUTOCOMMIT)) {
+			configureProviderDisablesAutocommit(vendorProperties);
+		}
 	}
 
 	private void configureJtaPlatform(Map<String, Object> vendorProperties)
@@ -124,6 +138,19 @@ class HibernateJpaConfiguration extends JpaBaseConfiguration {
 		}
 	}
 
+	private void configureProviderDisablesAutocommit(Map<String, Object> vendorProperties) {
+		if (isDataSourceAutoCommitDisabled() && !isJta()) {
+			vendorProperties.put(PROVIDER_DISABLES_AUTOCOMMIT, "true");
+		}
+	}
+
+	private boolean isDataSourceAutoCommitDisabled() {
+		DataSourcePoolMetadata poolMetadata = this.poolMetadataProvider
+				.getDataSourcePoolMetadata(getDataSource());
+		return poolMetadata != null
+				&& Boolean.FALSE.equals(poolMetadata.getDefaultAutoCommit());
+	}
+
 	private boolean runningOnWebSphere() {
 		return ClassUtils.isPresent(
 				"com.ibm.websphere.jtaextensions." + "ExtendedJTATransaction",

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfigurationTests.java

@@ -33,6 +33,7 @@ import javax.transaction.Transaction;
 import javax.transaction.TransactionManager;
 import javax.transaction.UserTransaction;
 
+import com.zaxxer.hikari.HikariDataSource;
 import org.hibernate.engine.transaction.jta.platform.spi.JtaPlatform;
 import org.junit.Test;
 
@@ -52,6 +53,7 @@ import org.springframework.orm.jpa.JpaTransactionManager;
 import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.entry;
 import static org.mockito.Mockito.mock;
 
 /**
@@ -194,6 +196,62 @@ public class HibernateJpaAutoConfigurationTests
 				});
 	}
 
+	@Test
+	public void providerDisablesAutoCommitIsConfigured() {
+		contextRunner().withPropertyValues(
+				"spring.datasource.type:" + HikariDataSource.class.getName(),
+				"spring.datasource.hikari.auto-commit:false").run((context) -> {
+			Map<String, Object> jpaProperties = context
+					.getBean(LocalContainerEntityManagerFactoryBean.class)
+					.getJpaPropertyMap();
+			assertThat(jpaProperties).contains(entry(
+					"hibernate.connection.provider_disables_autocommit", "true"));
+		});
+	}
+
+	@Test
+	public void providerDisablesAutoCommitIsNotConfiguredIfAutoCommitIsEnabled() {
+		contextRunner().withPropertyValues(
+				"spring.datasource.type:" + HikariDataSource.class.getName(),
+				"spring.datasource.hikari.auto-commit:true").run((context) -> {
+			Map<String, Object> jpaProperties = context
+					.getBean(LocalContainerEntityManagerFactoryBean.class)
+					.getJpaPropertyMap();
+			assertThat(jpaProperties).doesNotContainKeys(
+					"hibernate.connection.provider_disables_autocommit");
+		});
+	}
+
+	@Test
+	public void providerDisablesAutoCommitIsNotConfiguredIfPropertyIsSet() {
+		contextRunner().withPropertyValues(
+				"spring.datasource.type:" + HikariDataSource.class.getName(),
+				"spring.datasource.hikari.auto-commit:false",
+				"spring.jpa.properties.hibernate.connection.provider_disables_autocommit=false"
+		).run((context) -> {
+			Map<String, Object> jpaProperties = context
+					.getBean(LocalContainerEntityManagerFactoryBean.class)
+					.getJpaPropertyMap();
+			assertThat(jpaProperties).contains(entry(
+					"hibernate.connection.provider_disables_autocommit", "false"));
+		});
+	}
+
+	@Test
+	public void providerDisablesAutoCommitIsNotConfiguredWihJta() {
+		contextRunner()
+				.withConfiguration(AutoConfigurations.of(JtaAutoConfiguration.class))
+				.withPropertyValues(
+						"spring.datasource.type:" + HikariDataSource.class.getName(),
+						"spring.datasource.hikari.auto-commit:false").run((context) -> {
+			Map<String, Object> jpaProperties = context
+					.getBean(LocalContainerEntityManagerFactoryBean.class)
+					.getJpaPropertyMap();
+			assertThat(jpaProperties).doesNotContainKeys(
+					"hibernate.connection.provider_disables_autocommit");
+		});
+	}
+
 	@Configuration
 	@TestAutoConfigurationPackage(City.class)
 	static class TestInitializedJpaConfiguration {

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jdbc/metadata/CommonsDbcp2DataSourcePoolMetadata.java

@@ -53,4 +53,9 @@ public class CommonsDbcp2DataSourcePoolMetadata
 		return getDataSource().getValidationQuery();
 	}
 
+	@Override
+	public Boolean getDefaultAutoCommit() {
+		return getDataSource().getDefaultAutoCommit();
+	}
+
 }

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jdbc/metadata/DataSourcePoolMetadata.java

@@ -71,4 +71,12 @@ public interface DataSourcePoolMetadata {
 	 */
 	String getValidationQuery();
 
+	/**
+	 * The default auto-commit state of connections created by this pool.
+	 * If not set ({@code null}), default is JDBC driver default
+	 * (If set to null then the java.sql.Connection.setAutoCommit(boolean) method will not be called.)
+	 * @return the default auto-commit state or {@code null}
+	 */
+	Boolean getDefaultAutoCommit();
+
 }

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jdbc/metadata/HikariDataSourcePoolMetadata.java

@@ -66,4 +66,9 @@ public class HikariDataSourcePoolMetadata
 		return getDataSource().getConnectionTestQuery();
 	}
 
+	@Override
+	public Boolean getDefaultAutoCommit() {
+		return getDataSource().isAutoCommit();
+	}
+
 }

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/jdbc/metadata/TomcatDataSourcePoolMetadata.java

@@ -53,4 +53,9 @@ public class TomcatDataSourcePoolMetadata
 		return getDataSource().getValidationQuery();
 	}
 
+	@Override
+	public Boolean getDefaultAutoCommit() {
+		return getDataSource().isDefaultAutoCommit();
+	}
+
 }

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jdbc/metadata/AbstractDataSourcePoolMetadataTests.java

@@ -86,6 +86,9 @@ public abstract class AbstractDataSourcePoolMetadataTests<D extends AbstractData
 	@Test
 	public abstract void getValidationQuery();
 
+	@Test
+	public abstract void getDefaultAutoCommit();
+
 	protected DataSourceBuilder<?> initializeBuilder() {
 		return DataSourceBuilder.create().driverClassName("org.hsqldb.jdbc.JDBCDriver")
 				.url("jdbc:hsqldb:mem:test").username("sa");

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jdbc/metadata/CommonsDbcp2DataSourcePoolMetadataTests.java

@@ -81,6 +81,14 @@ public class CommonsDbcp2DataSourcePoolMetadataTests
 						.isEqualTo("SELECT FROM FOO");
 	}
 
+	@Override
+	public void getDefaultAutoCommit() {
+		BasicDataSource dataSource = createDataSource();
+		dataSource.setDefaultAutoCommit(false);
+		assertThat(new CommonsDbcp2DataSourcePoolMetadata(dataSource)
+				.getDefaultAutoCommit()).isFalse();
+	}
+
 	private CommonsDbcp2DataSourcePoolMetadata createDataSourceMetadata(int minSize,
 			int maxSize) {
 		BasicDataSource dataSource = createDataSource();

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jdbc/metadata/HikariDataSourcePoolMetadataTests.java

@@ -50,6 +50,14 @@ public class HikariDataSourcePoolMetadataTests
 				.isEqualTo("SELECT FROM FOO");
 	}
 
+	@Override
+	public void getDefaultAutoCommit() {
+		HikariDataSource dataSource = createDataSource(0, 4);
+		dataSource.setAutoCommit(false);
+		assertThat(new HikariDataSourcePoolMetadata(dataSource).getDefaultAutoCommit())
+				.isFalse();
+	}
+
 	private HikariDataSource createDataSource(int minSize, int maxSize) {
 		HikariDataSource dataSource = initializeBuilder().type(HikariDataSource.class)
 				.build();

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/jdbc/metadata/TomcatDataSourcePoolMetadataTests.java

@@ -50,6 +50,14 @@ public class TomcatDataSourcePoolMetadataTests
 				.isEqualTo("SELECT FROM FOO");
 	}
 
+	@Override
+	public void getDefaultAutoCommit() {
+		DataSource dataSource = createDataSource(0, 4);
+		dataSource.setDefaultAutoCommit(false);
+		assertThat(new TomcatDataSourcePoolMetadata(dataSource).getDefaultAutoCommit())
+				.isFalse();
+	}
+
 	private DataSource createDataSource(int minSize, int maxSize) {
 		DataSource dataSource = initializeBuilder().type(DataSource.class).build();
 		dataSource.setMinIdle(minSize);